Results 131 to 140 of about 206,039 (334)
Multi-user channel estimation for uplink OFDMA systems based on the random-set theory
Tongxin xuebao, 2012 For the uplink OFDMA systems,a random-set theory based multi-user channel estimation algorithm was proposed.In the proposed algorithm,states of the users the multi-path channels were modeled and described by a finite random set.Then the Bayes filtering ...
Yuan JING, Bin NIU, Ying-ying TAI
doaj +2 more sources
Agribusiness, EarlyView.Abstract The Russian invasion of Ukraine in February 2022 had profound consequences for the global economy. As both countries are major commodity exporters, the food value chain was also affected. This study investigates the impact of the invasion on stock prices, profitability and sentiments of agribusinesses along the food supply chain by using an ...
Julia Höhler +2 more
wiley +1 more source
Import Wheat Tenders and the Effects of the Russian Invasion
Agribusiness, EarlyView.ABSTRACT Risk and volatility for many commodities escalated sharply following the Russian invasion of Ukraine, creating numerous uncertainties for trading firms and importers. The purpose of this study is to analyze the bidding behavior in Egyptian wheat import tenders in the pre‐ and post‐invasion periods.
William W. Wilson +2 more
wiley +1 more source
Traceability of Agri‐Food Products: The Key to Conscious Trade
Agribusiness, EarlyView.ABSTRACT Globalization and growing concerns about sustainability have led to improvements in product traceability, quality, and sustainability. Traceability contributes to environmental protection and supports sustainable development by fostering transparency in agricultural practices and encouraging the responsible use of resources.
Scarlett Queen Almeida Bispo +5 more
wiley +1 more source
Journal of Mathematical Extension, 2011 We develop a new empirical Bayes analysis in multiple regression models. In the present work we consider multivariate skewnormal as prior for coefficients of the model in a skew-normal population and give empirical Bayes estimation for parameters of ...
M. Khounsiavash +2 more
doaj
Xibei Gongye Daxue XuebaoAiming at the traditional accelerated life test only considering the single stress and single failure cause, the inference method of double stress accelerated competing risks data is studied under the adaptive type-Ⅱ progressively censored and the life ...
YANG Tianle, LI Huacong, FU Jiangfeng
doaj +1 more source
Empirical Bayes estimation via data fission [PDF]
Nikolaos Ignatiadis, Dennis L. Sun
openalex +1 more source
Agribusiness, EarlyView.ABSTRACT Native plants offer a variety of aesthetic (e.g., fall colour, fruit, flowers) and functional benefits (e.g., pollinator friendly, wildlife friendly, water management). How these benefits influence consumer choice and perceived value of native versus introduced plants is not well understood.
Alicia Rihn +3 more
wiley +1 more source
Mutual information for symmetric rank-one matrix estimation: A proof of the replica formula
, 2016 Factorizing low-rank matrices has many applications in machine learning and statistics. For probabilistic models in the Bayes optimal setting, a general expression for the mutual information has been proposed using heuristic statistical physics ...
Barbier, Jean +5 more
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